I've read a couple threads with similar question I have but I'm still baffled. car info: 2014 Model S. My electric bill soared in the last month and I never guessed it was because of the time when my Tesla was charging until I went into the garage and found it was charging during peak electric rate time. I went to see what happened with my scheduled charging that has always been set to 12:15 AM and found yet another change to the menu and, honestly, I don't know exactly what it had defaulted to because I immediately tried to change it back to schedule at 12:15 AM and couldn't. I tried to figure out what the hell this "Schedule Departure" even means and I am still not sure - so I set the scheduled departure to 6AM when my rates go up hoping it starts charging no earlier than 12 AM. The "Schedule Charging" option is grayed out and I can't select it. This is frustrating and this change, unknown to me, cost me $$$ on my electric bill. I did have a the chip (whatever it is called) replaced. I'm not a techy nerd (any more); I just want my Tesla to be a car, not an exercise in relentless learning. I surely do not want to be spending more on electricity because Tesla has decided for me when my rates are lowest.